Prior Probability Functions of the Standard and Truncated Distribution R package ggdmcPrior version 0.2.9.0 Provides tools for specifying and evaluating standard and truncated probability distributions, with support for log-space computation and joint distribution specification. It enables Bayesian computation for cognition models and includes utilities for density calculation, sampling, and visualisation, facilitating prior distribution specification and model assessment in hierarchical Bayesian frameworks. Software Depends: R (>= 3.5.0) Imports: Rcpp (>= 1.0.7), methods, lattice LinkingTo: Rcpp (>= 1.0.7), RcppArmadillo (>= 0.10.7.5.0), ggdmcHeaders Suggests: testthat, ggdmcModel Yi-Shin Lin <yishinlin001@gmail.com> Comprehensive R Archive Network (CRAN) Yi-Shin Lin [aut, cre] GPL (>= 2) 2025-07-24 application/tgz https://CRAN.R-project.org/package=ggdmcPrior doi:10.32614/CRAN.package.ggdmcPrior